/Engine/Plugins/Runtime/RigVM/Source/RigVMDeveloper/Public/RigVMModel/RigVMSchema.h
Returns true if a link exists between two pins and can be broken / removed.
virtual bool CanBreakLink ( [URigVMController](API\Plugins\RigVMDeveloper\RigVMModel\URigVMController) * InController, const [URigVMPin](API\Plugins\RigVMDeveloper\RigVMModel\URigVMPin) * InSourcePin, const [URigVMPin](API\Plugins\RigVMDeveloper\RigVMModel\URigVMPin) * InTargetPin ) const